43942197 has 32 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 26347776.

The previous prime is 43942187. The next prime is 43942243. The reversal of 43942197 is 79124934.

It is not a de Polignac number, because 43942197 - 2⁴ = 43942181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43942147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388813 + ... + 388925.

It is an arithmetic number, because the mean of its divisors is an integer number (2034900).

Almost surely, 2^43942197 is an apocalyptic number.

It is an amenable number.

43942197 is a deficient number, since it is larger than the sum of its proper divisors (21174603).

43942197 is a wasteful number, since it uses less digits than its factorization.

43942197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 188 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 43942197 is about 6628.8910837334. The cubic root of 43942197 is about 352.8801712975.

The spelling of 43942197 in words is "forty-three million, nine hundred forty-two thousand, one hundred ninety-seven".